Abstract: A system is provided for controlling a motor and rudder of a power boat selectively from either of two remote stations, each of which includes means for producing linear input signals for motor shift and throttle control and for steering control. The system includes a steering input selector mechanism which is capable of transmitting the linear input signal for steering control from one of the stations to the rudder while isolating the signal from the other station. A motor input selector mechanism is capable of transmitting the linear input signals for motor shift and throttle control from one of the stations to the motor while isolating the signals from the other station. The steering and motor input selector mechanism may be actuated to facilitate the selection of one of the stations whenever corresponding linear input signals from the two stations are substantially equal.